Set of 3 AA rechargeable nickel metal hydride batteries allows up to 1000 recharges, for a total of 40,000 to 50,000 hours of use. Included battery charger automatically stops charging when batteries are fully charged….protects batteries from overcharging, also permits conventional light operation by plugging into regular wall outlet. No need for expensive recharger stations, plugs into inexpensive multiple outlet power strips available from any grocery or hardware store.